Grinding machine



FIG. 2.1 is a front, left side perspective view of a grinding machine in accordance with the new design;

FIG. 2.2 is a front, right side perspective view thereof;

FIG. 2.3 is a rear, right side perspective view thereof;

FIG. 2.4 is a rear, left side perspective view thereof;

FIG. 2.5 is a right side elevational view thereof;

FIG. 2.6 is a front elevational view thereof;

FIG. 2.7 is a left side elevational view thereof; and,

FIG. 2.8 is a rear elevational view thereof. 

CLAIM The ornamental design for a grinding machine, as shown and described. 